Sprinkle fillets with salt and pepper. Coat fillets and onion slices with cooking spray. Place fish and onion on grill rack coated with cooking spray. Cover and grill 5 minutes on each side or until fish flakes easily when tested with a fork and onion is tender.

A generous portion of tender, flaky salmon tops this vitamin C–packed salad. To speed preparation, use a jar of fresh red grapefruit sections and bottled blood orange juice. Prepare the Blood Orange Vinaigrette while the salmon and onion are on the grill.